Structure 583000000580156 · La Salle County, LA

La0500 over Little River

Carries La0500 over Little River, Located @ Lasall @ Grant.

Overall conditionGood

Set by its lowest-rated component: Deck and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,200 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 7/9 · sets the rating

1,200 ft end to end, longest span 100 ft: about 3.3 football fields. Lengths and the semi-truck on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a box-beam bridge.

Built201115 years old
Length1200.1 ft365.8 m
Daily traffic633counted 2021
Last inspectedMay 2023every 24 months

Location

StateLouisiana
CountyLa Salle
LocationLocated @ Lasall @ Grant
CarriesLa0500
CrossesLittle River
Coordinates31.75551, -92.34569

Physical Characteristics

MaterialConcrete Continuous
DesignBox Beam - Multiple
Total Length1200.1 ft (365.8 m)
Max Span100.1 ft (30.5 m)
Deck Width42.7 ft (13 m)
Deck Area4755.4 sq m
Main Spans12
Year Built2011

Traffic

Avg Daily Traffic633 (2021)
Truck Traffic21%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMay 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number583000000580156

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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